Age at Initial Referral (Arc ^{†}) | AVN After Orthopaedic Referral Rate per 1000 Referred Infants | Sample Size Average (SD) | Sample Size Total | No. of Arms | ||
---|---|---|---|---|---|---|

Unweighted Average (SD) | Weighted^{‡}Average (SD) | Meta-analytic Average (SD) | ||||

Younger than 2 mo (5, 12+ → 31) | 16.6 (35) | 6.4 (23) | 13.5 (24) | 514 (922) | 7606 | 17 |

Without outliers^{§}
| 2.5 (5.9) | 1.5 (1.4) | 2.5 (9.5) | 447 (907) | ⋯ | |

Older than 2 mo (20, 29, 30+ → 31) | 116 (70) | 54 (49) | 109 (88) | 1158 (1885) | 9270 | 7 |

* AVN indicates avascular necrosis. See Evidence Tables 7 and 8.

↵† Arc refers to the influence diagram (see Fig. 2).

↵‡ Weighted estimates computed by pooling the numerators and denominators of the target arms.

↵§ Outliers are target article 83 (81/1000), target article 84 (123), and target article 60 (43).